content: /*******************************************************************************
   * Copyright 2011, 2012 Chris Banes.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *******************************************************************************/
  package com.handmark.pulltorefresh.library.extras;
  
  import java.util.HashMap;
  
  import android.content.Context;
  import android.media.MediaPlayer;
  import android.view.View;
  
  import com.handmark.pulltorefresh.library.PullToRefreshBase;
  import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
  import com.handmark.pulltorefresh.library.PullToRefreshBase.State;
  
  public class SoundPullEventListener<V extends View> implements PullToRefreshBase.OnPullEventListener<V> {
  
  	private final Context mContext;
  	private final HashMap<State, Integer> mSoundMap;
  
  	private MediaPlayer mCurrentMediaPlayer;
  
  	/**
  	 * Constructor
  	 * 
  	 * @param context - Context
  	 */
  	public SoundPullEventListener(Context context) {
  		mContext = context;
  		mSoundMap = new HashMap<State, Integer>();
  	}
  
  	@Override
  	public final void onPullEvent(PullToRefreshBase<V> refreshView, State event, Mode direction) {
  		Integer soundResIdObj = mSoundMap.get(event);
  		if (null != soundResIdObj) {
  			playSound(soundResIdObj.intValue());
  		}
  	}
  
  	/**
  	 * Set the Sounds to be played when a Pull Event happens. You specify which
  	 * sound plays for which events by calling this method multiple times for
  	 * each event.
  	 * <p/>
  	 * If you've already set a sound for a certain event, and add another sound
  	 * for that event, only the new sound will be played.
  	 * 
  	 * @param event - The event for which the sound will be played.
  	 * @param resId - Resource Id of the sound file to be played (e.g.
  	 *            <var>R.raw.pull_sound</var>)
  	 */
  	public void addSoundEvent(State event, int resId) {
  		mSoundMap.put(event, resId);
  	}
  
  	/**
  	 * Clears all of the previously set sounds and events.
  	 */
  	public void clearSounds() {
  		mSoundMap.clear();
  	}
  
  	/**
  	 * Gets the current (or last) MediaPlayer instance.
  	 */
  	public MediaPlayer getCurrentMediaPlayer() {
  		return mCurrentMediaPlayer;
  	}
  
  	private void playSound(int resId) {
  		// Stop current player, if there's one playing
  		if (null != mCurrentMediaPlayer) {
  			mCurrentMediaPlayer.stop();
  			mCurrentMediaPlayer.release();
  		}
  
  		mCurrentMediaPlayer = MediaPlayer.create(mContext, resId);
  		if (null != mCurrentMediaPlayer) {
  			mCurrentMediaPlayer.start();
  		}
  	}
  
  }
  